why transfromer rating gives in MVA Or KVA? Why not in MW
or KW?
Answers were Sorted based on User's Feedback
Answer / alpha cherian
Transformer Copper loss depends on the current drawn and
Iron loss depends on the Voltage. These are affected by the
load connected to it. While designing it is unpredictable.
Since power factor is not constant "KW" rating will be
wrong. Hence rating in kVA.
Kw rating = kVA rating x Power factor
Is This Answer Correct ? | 18 Yes | 3 No |
Answer / blaji
loss of trasformer dependes on voltage and current only,
not the angle between them...
anythink give supply rated on KVA--Alternator-chock-trasfo.
anythink takes power termed in KW-light-bulb,load,,,
at the time of designe we do not know about load PF,that y
Alternator rated in KVA,,
but we knew pf of any motor after designe...so we can add it
Power=V*I*pf....bk_kangaonkar@yahoo.co.in
Is This Answer Correct ? | 17 Yes | 3 No |
Answer / satish kumar , g.noida
because transformer not is self load.transformer rating
depend upon type of connecting load
(resistive/indactive/capactive).
Is This Answer Correct ? | 19 Yes | 7 No |
Answer / satish kumar
Because transformer is not self load so that Transformer
power factor depend upon which type of connected load such
as Resistive/inductive/capactive load
Is This Answer Correct ? | 12 Yes | 2 No |
Answer / divya makkar
because transformer have variable power factor so that it is
rated in kva and motor has constant power factor thats why
it is rated in kw
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / roushan.eee
MVA OR KVA; WE USE FOR ELECTRICAL O/P.
MW OR KW; WE USE FOR MECHANICAL O/P.
Is This Answer Correct ? | 6 Yes | 21 No |
Why generally the Rating of Transformers are in additions of 11 i.e. 11 kVA, 22 kVa, 33 kVA, etc........
if u have to run a 300kw moter then what is ur choice HT or LT switchgear & explain why?
what is the different betweem earthing and neutral?
explain with diagram how to protect transformers and substations from over current with help of CT's?
What is the estimated total hydropower potential of india?
why do you want leave the company
What is the difference between Neutral And Earth ?
what happened if power factor is "1"
The MCB circuit breaker have a voltage rating of 440VAC it's possible to supply a voltage of 480Vac
Can you any one explain application of buccholz relay operation and pressure relif device operation of power transformer
In 11/0.414 KV Parralel supply network with Bus tie closed what will be the fault level is it doubled or halved??
How many losses in generators? how we can reduce them? and also in motors,transformers?